<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>蓝蓝</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }

        body {
            min-width: 100vw;
            min-height: 100vh;
            background: linear-gradient(45deg, #006bc6, #1ecafc);
        }
    </style>
</head>

<body>

</body>

</html>